Spring cleaning may be well behind us, but there's likely still a pile of unwanted stuff cluttering your home. If posting it on eBay or listing it on Craigslist sounds like too much hassle, a new startup based out of Seattle may have just the app for you.

OfferUp has introduced a new mobile app for iPhone that promises to take the pain and suffering out of selling your unwanted clutter simply by taking a photo of it. OfferUp  combines the best elements of existing online marketplaces, where buyers can get good deals from sellers looking to turn unused items into cash -- but one that's potentially much safer than Craigslist.

“As a new father of a 12 month-old baby girl, my wife and I soon discovered that many items had to come and go into our home or else we’d wind up on a TV episode of Hoarders,” explains OfferUp founder and CEO, Nick Huzar.

“Like many growing families, we turned to Craigslist but found it very time consuming and there were times when I was a little fearful or guarded about closing a transaction in person -- especially if my wife and child were with me or if my wife wanted to do it alone.”

Huzar's solution is OfferUp, a free iPhone app that utilizes a "Snap and Tap" method for posting your "gently-used" items up for sale in less than a minute -- all without having to connect to a computer. In addition to being listed on OfferUp's website and mobile marketplace, sellers also have the option to share listings via Facebook, Pinterest or with emails to individuals or groups.

For buyers, OfferUp offers a unique, photo-based shopping interface for discovering nearby deals relevant to their interests or lifestyle. The service also tracks how promptly buyers respond, so sellers can weed out window shoppers to get to the serious buyers.

Buyers and sellers communicate through in-app private messaging, where each remains anonymous until both parties decide to make a deal. An OfferUp TruYou member program lets either side provide information to validate their identity (such as a driver's license), which can then be cross-referenced with public records before committing to a transaction.

To see a video of OfferUp in action or sign up to start unloading your own items, head to the company's website and then download the app free on the App Store.

Follow this article’s author, J.R. Bookwalter on Twitter